Bunn NITRON® Cold Draft Scholle 4:1 to 12:1 Installation guide

Brand: Bunn

Model: NITRON® Cold Draft Scholle 4:1 to 12:1

Category: Coffee makers

Type: Installation guide

COLD DRAFT

INSTALLATION & OPERATING GUIDE

Designs, materials, weights, speciﬁcations, and dimensions for equipment

or replacement parts are subject to change without notice.

Bunn-O-Matic Corporation

Post Office Box 3227, Springfield, Illinois 62708-3227

Phone (217) 529-6601 | Fax (217) 529-6644

www.bunn.com

082218

BUNN-O-MATIC COMMERCIAL PRODUCT WARRANTY

Bunn-O-Matic Corp. (“BUNN”) warrants equipment manufactured by it as follows:

1) Airpots, thermal carafes, decanters, GPR servers, iced tea/coffee dispensers, MCR/MCP/MCA single cup brewers,

thermal servers and ThermoFresh

servers (mechanical and digital) 1 year parts and 1 year labor.

2) All other equipment - 2 years parts and 1 year labor plus added warranties as speciﬁed below:

a) Electronic circuit and/or control boards - parts and labor for 3 years.

b) Compressors on refrigeration equipment - 5 years parts and 1 year labor.

c) Grinding burrs on coffee grinding equipment to grind coffee to meet original factory screen sieve analysis -

parts and labor for 4 years or 40,000 pounds of coffee, whichever comes ﬁrst.

These warranty periods run from the date of installation BUNN warrants that the equipment manufactured by it will be

commercially free of defects in material and workmanship existing at the time of manufacture and appearing within the

applicable warranty period. This warranty does not apply to any equipment, component or part that was not manufactured

by BUNN or that, in BUNN’s judgment, has been affected by misuse, neglect, alteration, improper installation or operation,

improper maintenance or repair, non periodic cleaning and descaling, equipment failures related to poor water quality,

damage or casualty. In addition, the warranty does not apply to replacement of items subject to normal use including but

not limited to user replaceable parts such as seals and gaskets. This warranty is conditioned on the Buyer 1) giving BUNN

prompt notice of any claim to be made under this warranty by telephone at (217) 529-6601 or by writing to Post Ofﬁce Box

3227, Springﬁeld, Illinois 62708-3227; 2) if requested by BUNN, shipping the defective equipment prepaid to an authorized

BUNN service location; and 3) receiving prior authorization from BUNN that the defective equipment is under warranty.

THE FOREGOING WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ANY OTHER WARRANTY, WRITTEN OR ORAL, EX-

PRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF EITHER MERCHANTABILITY OR

FITNESS FOR A PARTICULAR PURPOSE. The agents, dealers or employees of BUNN are not authorized to make modi-

ﬁcations to this warranty or to make additional warranties that are binding on BUNN. Accordingly, statements by such

individuals, whether oral or written, do not constitute warranties and should not be relied upon.

If BUNN determines in its sole discretion that the equipment does not conform to the warranty, BUNN, at its exclusive op-

tion while the equipment is under warranty, shall either 1) provide at no charge replacement parts and/or labor (during the

applicable parts and labor warranty periods speciﬁed above) to repair the defective components, provided that this repair

is done by a BUNN Authorized Service Representative; or 2) shall replace the equipment or refund the purchase price for

the equipment.

THE BUYER’S REMEDY AGAINST BUNN FOR THE BREACH OF ANY OBLIGATION ARISING OUT OF THE SALE OF THIS

EQUIPMENT, WHETHER DERIVED FROM WARRANTY OR OTHERWISE, SHALL BE LIMITED, AT BUNN’S SOLE OPTION

AS SPECIFIED HEREIN, TO REPAIR, REPLACEMENT OR REFUND.

In no event shall BUNN be liable for any other damage or loss, including, but not limited to, lost proﬁts, lost sales, loss of

use of equipment, claims of Buyer’s customers, cost of capital, cost of down time, cost of substitute equipment, facilities

or services, or any other special, incidental or consequential damages.

392, A Partner You Can Count On, Air Infusion, AutoPOD, AXIOM, BrewLOGIC, BrewMETER, Brew Better Not Bitter, Brew-

WISE, BrewWIZARD, BUNN Espress, BUNN Family Gourmet, BUNN Gourmet, BUNN Pour-O-Matic, BUNN, BUNN with

the stylized red line, BUNNlink, Bunn-OMatic, Bunn-O-Matic, BUNNserve, BUNNSERVE with the stylized wrench design,

Cool Froth, DBC, Dr. Brew stylized Dr. design, Dual, Easy Pour, EasyClear, EasyGard, FlavorGard, Gourmet Ice, Gourmet

Juice, High Intensity, iMIX, Infusion Series, Intellisteam, My Café, Phase Brew, PowerLogic, Quality Beverage Equipment

Worldwide, Respect Earth, Respect Earth with the stylized leaf and coffee cherry design, Safety-Fresh, savemycoffee.com,

Scale-Pro, Silver Series, Single, Smart Funnel, Smart Hopper, SmartWAVE, Soft Heat, SplashGard, The Mark of Quality in

Beverage Equipment Worldwide, ThermoFresh, Titan, trifecta, TRIFECTA (sylized logo), Velocity Brew, Air Brew, Beverage

Bar Creator, Beverage Proﬁt Calculator, Brew better, not bitter., Build-A-Drink, BUNNSource, Coffee At Its Best, Cyclonic

Heating System, Daypart, Digital Brewer Control, Element, Milk Texturing Fusion, Nothing Brews Like a BUNN, Picture

Prompted Cleaning, Pouring Proﬁts, Signature Series, Sure Tamp, Tea At Its Best, The Horizontal Red Line, Ultra are either

trademarks or registered trademarks of Bunn-O-Matic Corporation. The commercial trifecta

brewer housing conﬁgura-

tion is a trademark of Bunn-O-Matic Corporation.

Warranty ............................................................................................................................2

User Notices ......................................................................................................................4

North American Requirements ...........................................................................................5

Plumbing Requirements ....................................................................................................6

Initial Set-Up ...................................................................................................................... 6

Nitrogen Gas Hook Up .......................................................................................................6

Electrical Requirements .....................................................................................................7

Product Concentrate Requirements ...................................................................................7

Plumbing Hookup ..............................................................................................................7

Initial Fill ............................................................................................................................8

Set Up Instructions ............................................................................................................9

Door Cover Installation ....................................................................................................10

Operating Controls ........................................................................................................... 11

Cleaning & Sanitizing Product Containers or BIB Connectors ..........................................13

Preventive Maintenance ...................................................................................................16

Loading & Priming Containers or Bag-In-Box with SCHOLLE/ASTRA Connectors ..........17

Adjustments & Optional Settings .....................................................................................21

Nitron

Cold Draft Decommission Procedure ...................................................................24

Fault Codes ......................................................................................................................26

Coolant Diagram ..............................................................................................................27

Schematic Wiring Diagram ..............................................................................................28

082218

INTRODUCTION

The cold draft dispenser and door have been shipped in one complete package (the door is in its own package

inside the larger box). To prevent damage, the door should remain in its individual packaging until it is ready

for installation. This package also includes the drip tray and grate, and the tapper handles for mounting onto

the door of the dispenser.

CONTENTS

Carefully read and follow all notices on the equipment and in this manual. They were written for your protection.

All notices are to be kept in good condition. Replace any unreadable or damaged labels.

00656.0001

As directed in the International Plumbing Code of the

International Code Council and the Food Code

Manual of the Food and Drug Administration (FDA),

this equipment must be installed with adequate

backflow prevention to comply with federal, state

and local codes. For models installed outside the

U.S.A., you must comply with the applicable Plumb-

ing /Sanitation Code for your area.

00986.0002

WARNING

FAILURE TO COMPLY RISKS EQUIPMENT

DAMAGE, FIRE OR SHOCK HAZARD.

READ THE ENTIRE OPERATING MANUAL

BEFORE USING THIS PRODUCT

Use only on a properly protected circuit

capable of the rated load.

Electrically ground the chassis.

Follow national/local electrical codes.

Do not use near combustibles.

Do not deform plug or cord.

27442.0000

Moving Parts.

Do not operate

unit with this

panel removed.

Risk Of Electrical Shock.

Disconnect power before

servicing unit.

WARNING

33461.0001

CHARGE

Type R134A, Amount 9 oz (255 gm)

Design Pressures:

High 255 psi (17.6 bar) (1.76 MPa)

Low 36 psi (2.5 bar) (0.25 MPa)

41509.0006

SET N2 PRESSURE

125 PSIG

USER NOTICES

082218

CE REQUIREMENTS

• This appliance must be installed in locations where it can be overseen by trained personnel.

• For proper operation, this appliance must be installed where the temperature is between 5°C to 35°C.

• Appliance shall not be tilted more than 10° for safe operation.

• An electrician must provide electrical service as speciﬁed in conformance with all local and national codes.

• This appliance must not be cleaned by water jet.

• This appliance can be used by persons aged from 18 years and above if they have been given supervision or

instruction concerning use of the appliance in a safe way and if they understand the hazards involved.

• Keep the appliance and its cord out of reach of children aged less than 18 years.

• Appliances can be used by persons 18 years and above with reduced physical, sensory or mental capabilities

or lack of experience and knowledge if they have been given supervision or instruction concerning use of the

appliance in a safe way and understand the hazards involved.

• Children under the age of 18 years should be supervised to ensure they do not play with the appliance.

• If the power cord is ever damaged, it must be replaced by the manufacturer or authorized service personnel

with a special cord available from the manufacturer or its authorized service personnel in order to avoid a hazard.

• Machine must not be immersed for cleaning.

• Cleaning and user maintenance shall not be made by children unless they are older than 18 years and supervised.

• This appliance is intended to be used in household and similar applications such as:

– staff kitchen areas in shops, ofﬁces and other working environments;

– by clients in hotels, motels and other residential type environments;

– bed and breakfast type environments.

• This appliance not intended to be used in applications such as:

– farm houses;

• Access to the service areas permitted by Authorized Service personnel only.

• The A-Weighted sound pressure level is below 70 dBA.

NORTH AMERICAN REQUIREMENTS

• This appliance must be installed in locations where it can be overseen by trained personnel.

• For proper operation, this appliance must be installed where the temperature is between 41°F to 90°F

(5°C to 32°C) and 50% humidity.

• Appliance shall not be tilted more than 10° for safe operation.

• An electrician must provide electrical service as speciﬁed in conformance with all local and national codes.

• This appliance must not be cleaned by pressure washer.

• This appliance can be used by persons aged from 18 years and above if they have been given supervision or

instruction concerning use of the appliance in a safe way and if they understand the hazards involved.

• Keep the appliance and its cord out of reach of children aged less than 18 years.

• Appliances can be used by persons 18 years and above with reduced physical, sensory or mental capabilities or lack

of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a

safe way and understand the hazards involved.

• Children under the age of 18 years should be supervised to ensure they do not play with the appliance.

• If the power cord is ever damaged, it must be replaced by the manufacturer or authorized service personnel with a

special cord available from the manufacturer or its authorized service personnel in order to avoid

a hazard.

• Machine must not be immersed for cleaning.

• Cleaning and user maintenance shall not be made by children unless they are older than 18 years and supervised.

• This appliance is intended for commercial use in applications such as:

– staff kitchen areas in shops, ofﬁces and other working environments;

– by clients in hotel and motel lobbies and other similar types of environments;

• Access to the service areas permitted by Authorized Service personnel only.

082218

PLUMBING REQUIREMENTS

This dispenser must be connected to a FILTERED WATER source with operating pressure between 30 and 90 psi

(0.207 and 0.621 mPa) dynamic. This water source must be capable of producing a minimum ﬂow rate of 2 ﬂuid

ounces (88.7 milliliters) per second. A shut off valve should be installed in the line that will supply the dispenser.

If installing a water ﬁlter, it should be installed as close as possible to the inlet of the machine, but downstream

of the shut-off valve. The machine is supplied with a 3/8” (9.52 mm) male barb ﬁtting.

NOTE: At least 18 inches (457 mm) of an FDA approved ﬂexible beverage tubing, such as reinforced braided

polyethylene, before the dispenser will facilitate movement to clean the counter top. BUNN-O-MATIC does

not recommend the use of saddle valves to install the dispenser. The size and shape of the hole(s) made in

the supply line(s) by saddle valves may restrict water ﬂow.

If the water pressure is below 30 psi (dynamic) pressure, a booster pump (P/N 41815.1000) is required at the

water line. When installing a water ﬁlter and a booster pump, install the water ﬁlter in between the booster pump

and the machine.

The cold draft dispenser dimensions are 10"W x 28.4"D x 34"H. The dispenser is designed for indoor use only,

in ambient temperatures ranging from 50°F to 90°F and 65% relative humidity environments. Avoid locating the

machine where it will be subject to direct sunlight or exposed to other external heat sources. Install the dispenser

on a counter that is able to support 150lbs (68 KG) of weight from the machine. Allow a minimum clearance of 6”

at the back and top of the dispenser for proper air circulation. Leave some space so the dispenser can be moved

for cleaning. For optimum performance, do not let warm air from surrounding machines blow on the dispenser.

As directed in the International Plumbing Code of the International Code Council and the Food Code Manual of

the Food and Drug Administration (FDA), this equipment must be installed with adequate back ﬂow prevention to

comply with federal, state and local codes. For models installed outside the U.S.A., you must comply with the

applicable Plumbing /Sanitation Code for your area.

NITROGEN GAS HOOK-UP

An N

high-pressure tank must also be available prior to installation (customer supplied). There must be

sufﬁcient space for the cylinder and should be properly secured with a stand or chain to comply with local

safety codes.

The cold draft dispenser will need to be connected to an external Nitrogen (N

) source. This will require an N

pressure regulator to be installed at the tank with a gas supply line to the dispenser. The external N

supply

connection is a ¼” MFL located on the back of the machine.

The cold draft dispenser may also need connected to a nitrogen generator. The supply pressure from the

generator to the machine should be set to 125 psi.

NOTE: If the customer is supplying their own regulator, the regulator should have a working pressure up to

130 psi. 6-feet of dedicated N

gas tubing line is required to connect the N

regulator to the machine. The

gas tubing line must be rated at least 130 psi and requires a ¼” FFL ﬁtting at the end of the line to connect

to the machine.

NOTE: For best drink consistency and nitrogen infusion, the nitrogen supply pressure to the machine

should be set to 125 psi and maintain +/-10 psi from the 125 psi pressure set point.

NOTE: To ensure safe N

operation and compliance with local safety codes, the N

cylinder must be

properly secured. A strap or chain should be used as a means of properly securing the cylinder.

NOTE: When the supply nitrogen pressure drops below 100 psi, a red light indicator will ﬂash at the top

of the dispenser door.

NOTE: This dispenser is not designed to accept CO

gas.

INITIAL SET-UP

082218

UK Plug

CAUTION: The dispenser must be disconnected from the power source until speciﬁed in Electrical Hook-Up.

The 120V rated dispensers have an attached cord set and require a 2-wire, grounded, individual branch circuit rated 120

volts ac, 15 amp, single phase, 60Hz. The receptacle must be within 6 feet of the machine. The mating connector is NEMA

5-15R. The 220-230V rated dispensers have an attached cord set with 2-wire, grounded, rated 230VAC, 13 amp (UK) or

16 amp (Europe), single phase, 50/60Hz.

Refer to the data plate for exact electrical requirements.

PRODUCT CONCENTRATE REQUIREMENTS

The dispenser works with a range of concentrates. Some dispensers will dispense a range of 4:1 to 12:1.

Conﬁrm you have the correct dispenser for the concentrate you plan to use.

NOTE: Some concentrates may have different ratio capacities in the dispenser.

There are different product concentrate BIBs available today with a ball-valve or Scholle ﬁtting. Along with

the dispense range, make sure you have the correct Nitron2 model to connect your BIB concentrate in the

dispenser. If the product is packaged in jugs, we recommend you pour the concentrate into our reﬁllable

ball-valve containers (P/N 39302.0000).

PLUMBING HOOKUP

The water connection is located on the rear of the dispenser. A 3/8" (9.52 mm) male ﬂare adapter ﬁtting is

supplied, installed on the rear of the dispenser.

NOTE: Water pipe connections and ﬁxtures directly connected to a potable water supply shall be sized,

installed and maintained in accordance with federal, state and local codes.

CAUTION: Improper electrical installation will damage electronic components.

• An electrician must provide electrical service as speciﬁed.

• Using a voltmeter, check the voltage and color coding of each conductor at the electrical source.

Plug the dispenser into a 120V power source. Set the dispense switch to the ON position.

Water Hook Up

Euro Plug

ELECTRICAL HOOK-UP

CAUTION: Improper electrical installation will damage electronic components.

1. An electrician must provide electrical service as speciﬁed.

2. Using a voltmeter, check the voltage and color coding of each conductor at the electrical source.

3. Conﬁrm that the refrigeration switch near the main control board is in the OFF position.

4. Connect the dispenser to the power source.

5. If plumbing is to be hooked up later, be sure the dispenser is disconnected from the power

source. If plumbing has been hooked up, the dispenser is ready for Initial Fill.

ELECTRICAL REQUIREMENTS

082218

CAUTION: The dispenser must be disconnected from the power source throughout the initial ﬁll except when

speciﬁed in the instructions.

1. Remove drip tray assembly and splash panel from the dispenser. Replace the drip tray.

2. Connect the water source to the back of the dispenser.

3. Connect dispenser to the power source.

4. The dispenser is equipped with an automatic bath ﬁll circuit. When water is supplied and power is applied,

the water will automatically ﬁll if program switch is OFF and dispense switch is ON.

5. It is okay to turn ON the compressor water bath switch as soon as the bath starts ﬁlling.

6. Replace the splash panel and drip tray.

7. It will take several hours to create the ice bank required for full dispenser performance. During this time, some

further trickling from the water bath is expected due to expansion caused by ice bank formation. While the

refrigeration system is creating the ice bank, the dispenser may be readied for use as described in Loading,

Priming and Adjustment.

INITIAL FILL

082218

1. After connecting to a ﬁltered water source (see PLUMBING REQUIREMENTS), turn on the water supply to

the dispenser.

2. Connect the Nitrogen source to the dispenser, turn on the Nitrogen supply. For best drink consistency and

nitrogen infusion, the nitrogen supply pressure to the machine should be set to 125 psi and maintain +/-

10 psig from the 125 psi pressure set point. Verify that the regulator’s output gauge reads 125 psig. If the

regulator has a shut-off valve, move the regulator’s valve handle to the open position (the handle should

be parallel to the gas supply line).

3. Connect the LED lighting from the door cover to the door. Install the door using the 5 mounting screws

provided. (See DOOR COVER INSTALLATION)

4. Conﬁrm that the dispense switch (located in upper right corner

of door when open) is in the OFF position.

5. Connect the switches from the handle set to the wire harness

on the door (note right and left connections). Install the handle

set using the two screws on the bottom side of the handles.

Snap the plug in the hole on the door under the handles.

6. Remove the drip tray and splash panel.

7. Install dispense nozzles and drip tray. The nozzle with the

Nitro Stout Insert goes in the LEFT* dispense station. The

nitro stout insert’s function is to provide back pressure while

dispensing Nitro Coffee and aides in creating the “cascading”

or surging effect in the dispensed drink.

8. Load product into both stations of the dispenser. For

SCHOLLE/ASTRA type BIB's, see Loading instructions for

those connectors. Prime each side with product by pulling the

tapper handle until you see ﬁnished product ﬂowing from the

dispense nozzle.

9. Dispense a drink at each station and check the Brix by using

the Ratio Dispense Test or the Brix Dispense Test.

• The ﬁrst dial (left-most potentiometer on the board) will

adjust pump speed for the LEFT dispense station. The

second dial (second from the left) will adjust pump speed

for the RIGHT dispense station. Best practice is to start

with the pump dial set to 9:00 position.

10. Make adjustments to pump speed to achieve the desired Brix

target of the product.

11. Reinstall the splash panel. The dispenser will take between 4-6

hours to completely build the ice bank.

NOTE: Some models dispense nitro beverage on both

dispense stations. For these models use a stout dispense

nozzle on both dispense stations.

SET-UP INSTRUCTIONS

082218

DOOR COVER INSTALLATION

2. Conﬁrm door wiring harness is routed as shown

in photo when installing door cover. Install door

cover and secure the door cover using 5 screws

provided.

3. Connect tapper handle switches to harness in door.

NOTE: Connect left switch to blue wires (Left) and

right switch to red wires (Right).

5. Mount tapper handles through bottom of door as

shown using the screws provided.

6. Install black hole cover as shown.

4. Slide tapper handle into door assembly.

1. Install door cover by ﬁrst plugging the LEDs

from the door into the black connectors with

RED/BLACK wires

082218

OPERATING CONTROLS

Refrigeration Switch

Product Dispense Handles

Compressor/Water Bath Switch

The refrigeration switch is located on the Electrical

Panel of the dispenser near the Circuit Board. This

switch controls power to the water bath pump and relay

contacts for the compressor and condenser fan motor.

Product Dispense Tap Handles

Pulling and holding tap handle will initiate product ﬂow

from the respective nozzle; releasing the tap handle will

stop the ﬂow.

082218

Cup Placement Decal

Cup Placement

The cup placement decal will assist users in proper cup

placement when dispensing a beverage. Apply the cup

placement decal to the splash panel as shown.

OPERATING CONTROLS (Cont.)

Dispense Lockout Switch

This switch is located inside the door at the top. It is

used to turn ON and OFF the Dispensing function. It is

also used for ﬁll procedures.

Program Switch

This switch is located near the main control board next

to the refrigeration switch.

082218

Daily: Rinse Procedure

Tools required: 32 oz. (946 ml) minimum empty container.

1. Open dispenser door. Lift up on product containers and remove them from the machine.

2. Wipe down the internal compartment of the cabinet and the concentrate container’s inlet adapter(s) area.

3. Close the door, place an empty container under the dispensing nozzle(s).

4. Dispense from each station until clear water ﬂows from the dispense nozzle(s).

5. Open dispenser door and reconnect all product containers.

Daily: Parts Washing

1. Remove and wash the dispense nozzle(s), Nitro Stout Insert, drip tray and drip tray cover in a mild

detergent solution. Rinse thoroughly. Use brush (00674.0000) to clean inside and o-ring area on

dispense nozzles.

2. Remove Nitro Stout Insert in nitro nozzle for cleaning. Replace before reinstalling nozzle.

3. Wipe splash panel, areas around dispense nozzle(s), and refrigerated compartment with a clean, damp cloth.

4. Use brush and a mild detergent solution to clean inside dispense area where dispense nozzles are re

moved. Rinse and wipe thoroughly.

Sanitize Process

Tools required: 1 empty 5-gallon (18.9 L) bucket, sanitizer (options in list below), and clean, empty concentrate

container(s).

1. Remove all concentrate from the dispenser and store in a separate refrigerated compartment.

2. Fill clean empty concentrate container(s) with approximately 32 oz (946 ml) of warm tap water at minimum 80˚F

(26.6˚C). Load the containers of warm water into the dispenser.

3. Place an empty container under the dispense nozzles.

4. Dispense at each station until the stream out of the nozzles runs clear (about 30 seconds). NOTE: The dispenser will

not allow all dispense stations to run at the same time.

5. Once this is completed, remove the containers and empty.

6. Remove each dispense nozzle and Nitro Stout insert. Run under hot tap water to remove excess product build-up.

7. Prepare 2.5 gal. (9.46 L) of sanitizing solution (list of options below).

8. Place nozzles in a separate container of sanitizing solution and mix thoroughly. Allow the parts to soak for 2 minutes.

9. Clean the dispense nozzle receptacle (dispense valves) with sanitizing solution and a soft bristle brush.

10. Clean the concentrate containers inlet adapters with the sanitizing solution and a soft bristle brush. Discard all

remaining sanitizing solution.

11. Place the nozzles back in their dispense stations making sure to place the Nitro Stout insert in the Left dispense

nozzle (both nozzles on a dual Nitro model).

12. Fill approximately 128 ounces (3.8 L) of sanitizing solution (from the list of options below) into clean, empty con-

centrate containers. Do not re-use sanitizing solution from earlier steps. Load the containers into the dispenser.

13. Place the empty 5-gallon bucket under the dispense nozzles.

14. Dispense sanitizing solution through each station for 1 minute. Allow to soak for 5 minutes. Dispense from each

station for 2 minutes.

15. When the above cycle is complete, remove the sanitizing solution and replace with concentrate.

16. Activate a dispense at each station until product appears. Dispense 1 – 12 ounce (354.9 ml) glass of ﬁnished prod-

uct and discard.

17. Wipe internal and external surfaces with a clean damp cloth.

Sanitizer Product Options:

· Chlorine sanitizers - 1 packet of Kay-5 sanitizer (or equivalent active ingredients) into 2.5 gallons. (9.46 L) of mini-

mum 80˚F (26.6˚C) water to ensure 100 PPM chlorine.

· Quat = Mix Quat and minimum 80˚F (26.6˚C) water per manufacturers recommendation to achieve a minimum

400 PPM Quat.

CLEANING & SANITIZING INSTRUCTIONS - PRODUCT CONTAINERS

112719

Daily: Rinse Procedure

Tools required: 32 oz. (946 ml) minimum empty container

1. Open dispenser door. Disconnect BIB connector from BIB.

2. Close the door, place an empty container under the dispensing nozzle(s).

3. Dispense from each station until clear water ﬂows from the dispense nozzle(s).

4. Open dispenser door and reconnect all product containers.

5. Wipe down the internal compartment of the cabinet.

Daily: Parts Washing

1. Remove and wash the dispense nozzle(s), Nitro Stout Insert, drip tray and drip tray cover in a mild detergent

solution. Rinse thoroughly. Use brush (00674.0000) to clean inside and o-ring area on dispense nozzles.

2. Remove Nitro Stout Insert in nitro nozzle for cleaning. Replace before reinstalling nozzle.

3. Wipe splash panel, areas around dispense nozzle(s), and refrigerated compartment with a clean, damp cloth.

4. Use brush and a mild detergent solution to clean inside dispense area where dispense nozzles are

removed. Rinse and wipe thoroughly.

Sanitize Process - SCHOLLE or ASTRA BIB Connectors

Tools required: 1 empty container, sanitizer (options in list below), and clean, empty concentrate container.

1. Remove all concentrate from the dispenser and store in a separate refrigerated compartment.

2. Fill clean empty pitcher with approximately 64 oz (946 ml) of warm tap water approximately 80˚F (26.6˚C).

3. Disconnect BIB connectors inside the cabinet at the quick disconnect. Install the sanitizing extension tube

and reconnect the BIB connector.

4. Retrieve the white cleaning adapters and connect to the BIB mating connectors. NOTE: BUNN has provided

white cleaning adapters with every dispenser which are not used during normal use. Save the cleaning

adapters for future sanitizing as it is only used for In Place Cleaning (IPC) purposes.

5. Place BIB connector in pitcher of warm tap water.

6. Remove drip tray and place an empty 5-gallon bucket under the dispense nozzles.

7. Dispense at each station until the stream out of the nozzles runs clear (about 30-60 seconds). NOTE – The

dispenser will not allow all dispense stations to run at the same time.

8. Once this is completed, remove the BIB connectors from the warm water.

9. Remove each dispense nozzle and Nitro Stout insert. Run under hot tap water to remove excess product

build-up.

10. Prepare 2.5 gal. (9.46 L) of sanitizing solution (from the list of options below).

11. Place nozzles in a separate container of sanitizing solution and mix thoroughly. Allow the parts to soak for

2 minutes.

12. Clean the dispense nozzle receptacle (dispense valves) with sanitizing solution and a soft bristle brush.

13. Remove the cleaning adapter then clean the machine BIB connector and cleaning adapter using the sanitiz-

ing solution and a soft bristle brush. Discard all remaining sanitizing solution.

14. Place the nozzles back in their dispense stations making sure to place the Nitro Stout insert in the left

dispense nozzle (both nozzles on a dual Nitro model).

15. Prepare a pitcher of approximately 128 ounces (3.8 L) of sanitizing solution (from the list of options be-

low). Do not re-use sanitizing solution from earlier steps. Load the containers into the dispenser.

16. Place the empty 5-gallon bucket under the dispense nozzles.

17. Dispense sanitizing solution through each station for 1 minute. Allow to soak for 5 minutes. Dispense from

each station for 2 minutes. Do not let the pitcher of sanitizer run dry when completing this step.

18. When the above cycle is complete, remove the BIB connectors from the sanitizing solution. Remove clean-

ing adapters and store for later use. Remove the sanitizing extension tube and reconnect BIB connectors

to the machine. Reconnect to concentrate BIB’s and reinstall in the cabinet.

CLEANING & SANITIZING INSTRUCTIONS - SCHOLLE or ASTRA BIB CONNECTORS

112719

19. Activate a dispense at each station until product appears. Dispense 1 – 12 ounce (354.9 ml) glass of ﬁn-

ished product and discard.

20. Wipe internal and external surfaces with a clean damp cloth.

Sanitizer Product Options:

· Chlorine sanitizers - 1 packet of Kay-5 sanitizer (or equivalent active ingredients) into 2.5 gallons. (9.46

L) of minimum 80˚F (26.6˚C) water to ensure 100 PPM chlorine.

· Quat = Mix Quat and minimum 80˚F (26.6˚C) water per manufacturers recommendation to achieve a

minimum 400 PPM Quat.

Weekly: Clean Condenser Coils and Air Filter

1. Locate the removable air ﬁlter at the back of machine and remove to clean in warm soapy water.

2. Use a soft bristle brush to clean the build-up of dirt in the condenser.

Sanitize Extension Tube Sanitize Set-Up

CLEANING & SANITIZING INSTRUCTIONS - SCHOLLE or ASTRA BIB CONNECTORS (Cont.)

112719

Annually: Replace Pump Tubing

1. Open dispenser door.

2. Remove all product containers and place them in a refrigerated

(35-40 degrees F [1.6-4.4 degrees C]) environment. Disconnect all

connections to ambient products from the bottle adapter.

3. Rinse all dispense stations using steps outlined in “DAILY RINSE

PROCEDURE”.

4. Disconnect dispenser from power source.

5. Remove the dispense platform cover.

6. Disconnect the dispense platform water line(s) from the

supply line inside the refrigerated cabinet and disconnect

the wiring connection(s) from the cabinet receptacle(s).

7. Remove the mounting screw(s) securing the dispense platform(s)

to the cabinet .

8. Pull the dispense platform(s) completely out of the cabinet and

place it on a ﬂat work surface.

9. Close the dispenser door.

10. Remove the 4 screws securing the pump head.

11. Gently pull the pump head apart.

12. Gently pull the pump tube from around the pump’s rotor.

13. Release the clamps securing the old pump tubing to the

plastic elbows.

14. Pull the plastic elbows from the old pump tubing, and discard the

old pump tubing.

15. Insert the plastic elbows into the new pump tubing and secure it

with the clamps.

NOTE: Obtain new parts using the Illustrated Parts Catalog listed at

www.bunn.com.

16. Gently wrap the new pump tubing around the pump’s rotor.

17. Reassemble the pump housing onto the platform assembly.

18. Repeat steps 10 through 17 for the remaining pump(s).

19. Replace the dispense platform(s) into the refrigerated cabinet,

making sure to reconnect all electrical and water connections.

20. Replace the dispense platform cover.

21. Turn power on to dispenser.

22 Install containers of rinse water, run each station and check for

leaks. Repair leaks as necessary.

23. Replace product shelf and product containers. Reconnect any

connections to ambient product containers.

24. Prime the pumps as described in “PRIMING” in the Initial

Fill Section.

PREVENTIVE MAINTENANCE

082218

Frozen Concentrates

NOTE: Loading frozen concentrate in the product cabinet may cause damage to the machine. This damage

is not covered by warranty.

1. Thoroughly mix the thawed concentrate by vigorously shaking the product container.

2. Open the dispenser door.

3. Prior to placing the product container in the dispenser, make sure that the o-ring on the container adapter

is lubricated. This will ease removal of the container when it becomes necessary.

4. Place the product container in the desired position and press it ﬁrmly into the bottle adapter opening.

5. Open the vent hole in the product container. (If required).

NOTE: Concentrate in the container must be completely thawed and be within the temperature range of

35-40 degrees F (1.6-4.4 degrees C.) Product outside of this temperature range, especially below, may

produce an “out of ratio” drink.

Ambient Concentrates (Optional)

1. Install an Ambient Concentrate Conversion Kit (BUNN-O-MATIC part number 33699.0002) per the

instructions provided in the kit.

2. Attach the concentrate product hose to the appropriate concentrate line located at the rear of

the dispenser.

3. Attach the other end of the product hose to the product container through an appropriate ﬁtting.

NOTE: Although the dispenser is designed to accept ambient concentrates, the Nitro Coffee cascade per-

formance may be reduced due to ambient product mixing with the cold nitrogenated water.

PRIMING

1. Open the dispenser door

2. Load concentrate per instructions in section titled Loading.

3. Close the dispenser door.

4. Place a large container under the appropriate dispense nozzle. Pull and hold the tap handle, until concentrate

dispenses from the dispense nozzle.

NOTE: This may take several seconds, depending on the installation and set pump speed.

LOADING PRODUCT CONTAINERS

082218

LOADING BAG-IN-BOX (BIB) - SCHOLLE QUICK DISCONNECT FITTING ASSEMBLY

STEP 1 STEP 2 STEP 3

Prepare Bag-In-Box (BIB) for

installation by thoroughly mixing

concentrate by vigorously

shaking the product Bag-In-Box.

Next, locate the perforated hole

area on the box and release.

Pull the product BIB connector

through the hole and slide into

position, secure the BIB connector

in the cardboard opening by

engaging the cardboard tab into

the BIB connector groove.

Remove the cap/seal from the

Bag-In-Box connector and discard.

STEP 4 STEP 5 STEP 6

Locate the SCHOLLE quick

connect ﬁtting assemblies in the

door parts box.

Open the dispenser door and locate

the left and right product tubes

inside the cabinet.

Connect a SCHOLLE quick

connect assembly to the left

and right product tube.

STEP 7 STEP 8 STEP 9

First, place the BIB on the top shelf

with the bag receiver connector

towards the front, facing downward.

Use a little of the Lubri-Film to

make sure that the receiver

connector is lubricated. Grab the

left product tube with SCHOLLE

mating connector and screw

clockwise onto the bag receiver

connector until hand-tight.

Next, ensure right product tube is

positioned in the lower shelf center

cavity before placing BIB on lower

shelf with BIB connector facing

downward.

Pull BIB off shelf enough to be able

to connect the right product tube

with the SCHOLLE mating

connector. Use a little of the

Lubri-Film to make sure that the

receiver connector is lubricated.

082218

LOADING (Cont.)

STEP 10 STEP 11 STEP 12

Grab right product tube with

Scholle bag receiver connector

and screw clockwise onto mat-

ing BIB connector until hand-

tight. Place lower BIB back into

position with the SCHOLLE

connector positioned in cavity

of product shelf.

Ensure left and right product

tubes are properly routed without

any kinks.

Ensure the dispense lockout

switch is in the ON position before

closing the door.

Next, go to Priming Concentrate

Lines. Place empty container

under appropriate nozzle to be

ready for Priming.

PRIMING CONCENTRATE LINES

1. Open the dispenser door

2. Load concentrate per instructions in section titled Loading Bag-In-Box with SCHOLLE

Quick Disconnect Fitting Assembly.

3. Ensure the dispense lockout switch is in the On position.

4. Close the dispenser door.

5. Place a large container under the appropriate dispense nozzle. Pull and hold the tap handle, until

concentrate dispenses from the dispense nozzle.

NOTE: This may take several seconds, depending on the installation and set pump speed.

082218

LOADING BAG-IN-BOX (BIB) - Scholle "Y" Fitting QUICK DISCONNECT ASSEMBLY

STEP 1 STEP 2 STEP 3

First, mix concentrate by vigorously

shaking the B-I-B. Next locate the

perforated area and release. Locate

Scholle connector and set into

position and secure with perforated

tab. Remove BIB cap/seal.

Locate the Scholle quick connect

"Y" ﬁtting assembly in the door

parts box. Open the dispenser

door and ensure the Scholle con-

nector is facing inside the cabinet.

STEP 4 STEP 5 STEP 6

Ensure the "Y" ﬁtting is setup cor-

rectly by verifying the Scholle con-

nector is still facing the inside of the

cabinet.

Place B-I-B on shelf with B-I-B

connector facing up. Grab the

Scholle connector and screw onto

the mating B-I-B connector.

STEP 7 STEP 8

Ensure left and right product tubes

are properly routed without any

kinks and that the Scholle connec-

tor rests within the groove of the

shelf.

Located on the inside upper right

hand corner of the door, ensure

the dispense lockout switch is in

the On position before closing

the door.

Next, go to Priming Concentrate

Lines. Place empty container

under appropriate nozzle to be

ready for Priming.

082218

Attach the "Y" ﬁtting to the product

tubing.

Page is loading ...

Bunn NITRON® Cold Draft Scholle 4:1 to 12:1 Installation guide

Brand: Bunn

Model: NITRON® Cold Draft Scholle 4:1 to 12:1

Category: Coffee makers

Type: Installation guide

Download PDF

report

Bunn NITRON® Cold Draft Scholle 4:1 to 12:1 Installation guide

Bunn NITRON® Cold Draft Scholle 4:1 to 12:1 Installation guide

Related papers

Other documents